Analog Devices ADRV9001 User Manual page 111

Preliminary Technical Data
Table 43. Rx Initial Calibration Order
Order
1
2
3
4
5
6
7
8
9
10
11
12
Table 44. Tx Initial Calibration Order
Order
1
2
3
4
5
6
7
8
9
The calibration order is mostly determined by the algorithm dependency. It is important that the users wait for these calibrations to
complete successfully before continuing with other steps of initialization for the device.
NOTE: Table 42 provides a full list of initialization calibrations for the device. Not all of these calibrations have been implemented at this
time and are expected with future software updates.
System Considerations for Tx Initial Calibrations
In this section, high level block diagrams are used to show the device configurations and external system requirements for some Tx
initial calibrations. In all the diagrams, grayed-out lines and blocks are not active in the calibration. Blue blocks are the related
calibrations. It should be noted that as the ADRV9001 ARM performs each of the calibrations, it is tasked with configuring the
ADRV9001 device as per the diagrams below, with respect to enabling/disabling paths, etc. No user input is required in this regard.
However, it is important that the user ensures that external system conditions are met, such as having the power amplifier off for all
calibrations except for some initialization calibration utilizing ELB2.
Among 9 Tx initial calibrations, except for TX_DAC, all other 8 calibrations require to insert Tone/wideband signal into the Tx datapath
from an internal signal generator. Therefore, the internal microprocessor will disable the data port to avoid interference. Some
calibration algorithms, such as TX_LB_PD, TX_QEC, TX_LOL, TX_DCC and TX_ATTEN_DELAY further require the use of
observation datapath through ILB or ELB to receive the transmitted signal so that a joint analysis can be performed by observing the
relationship between the transmitted signal and received signal. As aforementioned, currently, only ILB feedback path is supported for
initial calibrations.
Transmitter Initial Calibrations Utilizing Internal Signal Generation Without Loopback
Figure 98 shows a high level block diagram of system configurations for Tx initial calibrations requiring inserting signals into the Tx
datapath without using loopback path.
Rx Initial Calibrations
RX_HPADC_RC
RX_HPADC_FLASH
RX_HPADC_DAC
RX_LPADC
RX_TIA_CUTOFF
RX_DCC
RX_GROUP_DELAY
RX_RF_DC_OFFSET
RX_GAIN_PATH_DELAY
RX_QEC_ILB_LO_DELAY
RX_QEC_TCAL
RX_QEC_FIC
Tx Initial Calibrations
TX_DCC
TX_BBAF
TX_DAC
TX_LB_PD
TX_LO_LEAKAGE
TX_QEC
TX_BBAF_GD
TX_ATTEN_DELAY
TX_PATH_DELAY
Rev. PrA | Page 111 of 253
UG-1828